Could you not make outlaw style armor? Is that not similar to the thieves costume?Too bad too. I'd buy the thief costumes if I could dye them black.
The only customisation option is to show or hide the head piece on costumes which have one.
Nirnrotten wrote: »Someone please correct me if I'm wrong but I think I remember hearing something about the new hats being able to be worn on top of a costume. Not exactly the sort of customization the OP probably is looking for, but it's a step in the right direction.